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More stories about CTLGroup

The CTLGroup elected Cary Cohrs as chairman during the organization’s recent fall board meeting. Cohrs is the president of American Cement Co. a joint venture of CRH’s Oldcastle Materials and Trap Rock Industries.

Hamlin Jennings has joined CTLGroup as an affiliated consultant. He will consult on cement chemistry, cementitious composite microstructural characterization, concrete durability, and mechanisms of creep and shrinkage.

Two producers formed a mutually beneficial arrangement that provided expertise on both sides of the river. Massive amounts of concrete were produced for the high-profile, fast-paced project in two states.

When the ASTM Standard Specification for Lightweight Aggregate for Internal Curing of Concrete was published in 2012, the standard change revealed a new understanding about the importance of high-level hydration of concrete. One year later, we look at how ASTM Standards C09 and C09.21 are...